Product Data Sheet
Hydroxy naphthol blue (disodium)
Catalog No. A43886
Hydroxy naphthol blue (disodium) is an azo dye utilized primarily as an acid-base indicator, exhibiting a maximum absorbance at 650 nm. This compound demonstrates distinct color changes within the pH range of 12 to 13, appearing pale red in the presence of calcium ions and transitioning to dark blue upon interaction with disodium EDTA. It is valuable in biochemical assays and analytical chemistry for monitoring pH levels and ion concentrations.
Chemical Information
| Catalog Num | A43886 |
|---|---|
| M. Wt | 598.49 |
| Formula | C20H12N2Na2O11S3 |
| Purity | >98% |
| Storage | at -20 °C 3 years (powder form); at -20 °C 6 months (Solution base) |
| CAS No. | 165660-27-5 |
| Synonyms | |
| SMILES | O=C1C=C(S(=O)(O)=O)C2=CC=CC=C2/C1=N/NC3=C(O)C(S(=O)(O[Na])=O)=CC4=CC(S(=O)(O[Na])=O)=CC=C43 |
Biological Activity
| Description | Hydroxy naphthol blue (disodium) is an azo dye utilized primarily as an acid-base indicator, exhibiting a maximum absorbance at 650 nm. This compound demonstrates distinct color changes within the pH range of 12 to 13, appearing pale red in the presence of calcium ions and transitioning to dark blue upon interaction with disodium EDTA. It is valuable in biochemical assays and analytical chemistry for monitoring pH levels and ion concentrations. |
|---|
RETURN POLICY
Adooq’s Unconditional Return Policy ensures a smooth online shopping experience for our customers. If you are in any way unsatisfied with your purchase, you may return any item(s) within 7 days of receiving it. In the event of product quality issues, either protocol related or product related problems, you may return any item(s) within 365 days from the original purchase date. Please follow the instructions below when returning products.
Adooq’s Unconditional Return Policy ensures a smooth online shopping experience for our customers. If you are in any way unsatisfied with your purchase, you may return any item(s) within 7 days of receiving it. In the event of product quality issues, either protocol related or product related problems, you may return any item(s) within 365 days from the original purchase date. Please follow the instructions below when returning products.
SHIPPING AND STORAGE
Adooq products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Adooq Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Adooq products are stable under the recommended conditions.
Adooq products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Adooq Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Adooq products are stable under the recommended conditions.
